280zx stalls when braking

[Dat Matt]

Hi

Firstly thanks for all your helpful suggestions a couple of months ago when my car wouldn't start. Turned out to be the EFI relay - sorted now!

It was running too rich, and after checking that all of the FI components were functioning correctly, I adjusted the spring tension in the AFM and corrected the mixture. However, it now stalls whenever I brake hard. If I start to brake with my foot on the clutch, the revs start to drop and if I brake hard enough, it actually stalls. By hard I mean during normal driving, not a tyre smoking emergency stop.

At first I thought that the deceleration could be causing the AFM flap to move, but surely the counterbalance would prevent this?

Any suggestions?

Many thanks,

Matt

 

[bongo]

It could be an air leak in the Brake servo or the associated pipework. Try disconnecting it and blocking it off (remember to leave more braking distance!)

It could also be a dirty sensor in the inlet manifold, some carb cleaner would sort it out if it was!